idle: for dealing with blackouts, sometimes it would be nice if we had, say, a 24 kWh battery pack. then power through most blackouts...
Confused... are you measuring panels in kWh not kW? And why would you need 24 kW or kWh?
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panels are in kW, batteries in kWh. would need probably ~3-4 kW worth of panels for a house... (looking, meant NiMH cells).
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this means, for similar power output, the PV panels and batteries would be fairly comparable cost-wise, assuming cheap batteries
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buying from US sellers, or lead-acid batteries, would make the cost of the battery bank pretty excessive though (~ $20k).
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Lead-acid batteries seem seriously overpriced vs cost of raw materials and how low-tech they are.
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yep, pretty much. the larger 18/20Ah UPS batteries seem best here for Wh/$, but still not really "good" here vs NiMH or LiON.
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Really? I thought UPS batts (usually SLA) were all way overpriced & large truck/SUV/boat batts were a better deal.
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I am finding small UPS batts (7-9 Ah) for ~$20-$30, and larger 20Ah for ~ $40. 80Ah marine batts usually seen around $200.
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granted, it all seems pretty variable, so dunno. for NiMH and 18650 was looking on Alibaba, but prices vary widely.
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